Disclosed is a method, system, program, and data structure for a storage controller to map logical blocks to physical storage blocks. The storage controller is in communication with at least one host system that views a logical storage space. The storage controller defines the logical storage space as...http://www.google.de/patents/US6839827?utm_source=gb-gplus-sharePatent US6839827 - Method, system, program, and data structures for mapping logical blocks to physical blocks